| Site Type: | Various |
| Site Status: | |
| Grid Reference: | |
| Google maps: | , |
| Rocks |
|---|
| Rock Age: | Triassic (Anisian, Carnian, Ladinian, Lower Triassic, Middle Triassic, Norian, Rhaetian, Upper Triassic) |
| Rock Name: | Mercia Mudstone Group, Penarth Group, Sherwood Sandstone Group |
| Rock Type: | Evaporite, Limestone, Mudstone, Sand, Sandstone |
| Interest |
|---|
| Minerals: | Halite |
| Other interest: | desert, sabkha, shelf |
The name 'Trias' was proposed by Alberti (1834) to cover a sequence already known in fair detail at outcrop, particularly in Lower Saxony. Central to the classification was the recognition of the Muschelkalk, a part of the succession characterised by dolomites and limestones carrying a marine fauna. The strata below the Muschelkalk were termed `Bunter', those above `Keuper', thus creating the three-fold division which is still in use and from which the system name is derived. The stages of the system are shown in the following table:
TABLE TO BE ADDED
